Comments

I believe this is due to overloading in the Zend_Test_PHPUnit test suite... and I think it may have been fixed already. Can you please pull from SVN and try running report coverage from there to verify?

Do coverage reports work normally on non-controller test suites (i.e., the ZF test suite, or your own test suites)? If not, then it's an issue with PHPUnit and/or XDebug. Otherwise, I'll consult with Sebastian to see what could be skewing the coverage creation.